Which Phrase Describes The Element Carbon-14? Decays At An Unknown Rate Found In An Organism’s Remains Forms From The Breakdown Of Nitrogen-14 Is Measured To Determine The Age Of Sedimentary Rocks. This technique is based on radioactive decay,. The three carbon isotopes are contrasted to perform radiocarbon dating.

The answer to the question is a) decays at an unknown rate. This technique is based on radioactive decay,. The three carbon isotopes are contrasted to perform radiocarbon dating.